Rotary vane combustion engine



FIG. 1 is a front elevational view of a rotary vane combustion engineshowing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a left side elevational view;

FIG. 4 is a right side elevational view;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof.

The ornamental design for a rotary vane combustion engine, as shown anddescribed.